$149 Cheap Flights from Ontario (ONT) to Kailua-Kona (KOA)

View $149 flight on Tue, Jun 3, 2025Opens in a new window

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Find available prices by choosing your travel dates.

Cheap Flights from Ontario to Kailua-Kona (ONT-KOA)

Prices were available within the past 7 days and start at $149 for one-way flights and $292 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Thu, Sep 11 - Thu, Sep 11
ONT
Ontario
KOA
Kona Coast
$292 Roundtrip, found 3 hours ago
$292
Roundtrip
found 3 hours ago
Select Delta flight, departing Thu, Sep 11 from Ontario to Kona Coast, returning Thu, Sep 11, priced at $292 found 3 hours ago
Southwest Airlines
Mon, Sep 8 - Tue, Sep 9
ONT
Ontario
KOA
Kona Coast
$297 Roundtrip, just found
$297
Roundtrip
just found
Select Southwest Airlines flight, departing Mon, Sep 8 from Ontario to Kona Coast, returning Tue, Sep 9, priced at $297 just found
American Airlines
Tue, Aug 26 - Wed, Sep 3
ONT
Ontario
KOA
Kona Coast
$297 Roundtrip, found 1 day ago
$297
Roundtrip
found 1 day ago
Select American Airlines flight, departing Tue, Aug 26 from Ontario to Kona Coast, returning Wed, Sep 3, priced at $297 found 1 day ago
United
Mon, Sep 15 - Fri, Sep 19
ONT
Ontario
KOA
Kona Coast
$300 Roundtrip, found 2 hours ago
$300
Roundtrip
found 2 hours ago
Select United flight, departing Mon, Sep 15 from Ontario to Kona Coast, returning Fri, Sep 19, priced at $300 found 2 hours ago
United
Fri, Nov 14 - Mon, Nov 17
ONT
Ontario
KOA
Kona Coast
$302 Roundtrip, just found
$302
Roundtrip
just found
Select United flight, departing Fri, Nov 14 from Ontario to Kona Coast, returning Mon, Nov 17, priced at $302 just found
United
Tue, May 27 - Wed, May 28
ONT
Ontario
KOA
Kona Coast
$303 Roundtrip, found 2 days ago
$303
Roundtrip
found 2 days ago
Select United flight, departing Tue, May 27 from Ontario to Kona Coast, returning Wed, May 28, priced at $303 found 2 days ago
Southwest Airlines
Mon, Sep 29 - Fri, Oct 3
ONT
Ontario
KOA
Kona Coast
$304 Roundtrip, found 2 days ago
$304
Roundtrip
found 2 days ago
Select Southwest Airlines flight, departing Mon, Sep 29 from Ontario to Kona Coast, returning Fri, Oct 3, priced at $304 found 2 days ago
Bargain Flight
Thu, Oct 16 - Tue, Oct 21
ONT
Ontario
KOA
Kona Coast
$305 Roundtrip, found 3 hours ago
$305
Roundtrip
found 3 hours ago
Select Bargain Flight flight, departing Thu, Oct 16 from Ontario to Kona Coast, returning Tue, Oct 21, priced at $305 found 3 hours ago
Delta
Thu, Aug 14 - Tue, Aug 19
ONT
Ontario
KOA
Kona Coast
$307 Roundtrip, found 7 hours ago
$307
Roundtrip
found 7 hours ago
Select Delta flight, departing Thu, Aug 14 from Ontario to Kona Coast, returning Tue, Aug 19, priced at $307 found 7 hours ago
Hawaiian Airlines
Tue, May 13 - Tue, May 27
ONT
Ontario
KOA
Kona Coast
$308 Roundtrip, found 5 hours ago
$308
Roundtrip
found 5 hours ago
Select Hawaiian Airlines flight, departing Tue, May 13 from Ontario to Kona Coast, returning Tue, May 27, priced at $308 found 5 hours ago

Frequently asked questions

How much does a flight from Los Angeles - Ontario Intl. Airport (ONT) to Kona Intl. Airport (KOA) cost?
Discover the latest flight deals from ONT to KOA by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from ONT to KOA?
The cheapest flights from ONT to KOA are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from Los Angeles - Ontario Intl. Airport (ONT) to Kona Intl. Airport (KOA)?
You can’t catch a direct flight from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Kona Intl. Airport (KOA). However, you can arrive in Kailua-Kona without any layovers by leaving from Los Angeles Intl. Airport (LAX).
What is the cheapest airline that flies from ONT to KOA?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that’ll take you from ONT to KOA. Sort your results by “Price (lowest to highest)” to snap up a great deal.
How many flights per day from Los Angeles - Ontario Intl. Airport (ONT) to Kona Intl. Airport (KOA)?
You’ll need to take a flight with a layover when traveling from Los Angeles - Ontario Intl. Airport (ONT) to Kona Intl. Airport (KOA). Direct flights don’t operate daily on this route. However, just filter your search to include one or two stops to find an option that works for you.
What day of the week has the most flights from ONT to KOA?
Friday is typically the busiest day for flights, while Tuesday is often the quietest.* Keep in mind that flight schedules can vary depending on a range of factors, including the carrier and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Los Angeles - Ontario Intl. Airport (ONT) to Kona Intl. Airport (KOA)?
To arrive at Kona Intl. Airport (KOA) without delays, opt for a flight that takes off from Los Angeles - Ontario Intl. Airport (ONT) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this time.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.
Is it cheaper to buy a plane ticket from Los Angeles - Ontario Intl. Airport (ONT) to Kona Intl. Airport (KOA) last-minute?
Last-minute bookings from ONT to KOA are generally more expensive. For the lowest rates, start searching for flights as soon as possible. That said, if you’re flexible with your travel dates, you may find a cheap fare right before your trip.
Is it cheaper to book an ONT to KOA flight and hotel package?
You’ll typically save money by securing an ONT to KOA flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it’s easy to manage it all in one place. Once you’ve chosen your ideal accommodations and flights, consider adding extras including car rentals, activities and tours.
Can I cancel or change the date of my flight from Los Angeles - Ontario Intl. Airport (ONT) to Kona Intl. Airport (KOA)?
If you reserved your ONT to KOA flight within the last 24 hours, you may be able to cancel or modify it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes after that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you’d like more information.
*Available to One Key members.